on March 29, 2022
What is meant by the principle of original horizontality?
Regional SpecificsThe principle of original horizontality states that layers of sediment are originally deposited horizontally under the action of gravity. It is a relative dating technique. The principle is important to the analysis of folded and tilted strata. What is the meaning of principle of original horizontality? The Law of Original Horizontality suggests that all rock
on March 29, 2022
What are the disadvantages of limestone?
Regional SpecificsQuarrying Advantages Disadvantages Provides employment Regular blasting produces excessive noise and dust Supports the local economy Dust and extra vehicle pollution can lead to increased numbers of respiratory conditions, eg asthma Better local road system Increase in traffic, eg transport lorries What are the advantages of using limestone? Limestone and sandstone advantages Simple care and
on March 29, 2022
What is the viscosity of andesitic lava?
Regional Specifics102 to 107 Pa s102 to 107 Pa s, which is due to a wide range in phenocryst contents from 0 (phenocryst‐free andesitic melt) to ∼50 vol % (50 vol % rhyolitic melt + 50 vol % phenocrysts). Does andesitic lava have low viscosity? Siliceous Lava Flows – High viscosity andesitic and rhyolitic lava flows,
on March 29, 2022
What is the crystal form of a mineral?
Regional SpecificsCrystal form refers to the geometric shape of mineral crystals. Crystal form is caused by the symmetrical, three-dimensional arrangement of atoms inside the mineral. Not all minerals form perfect visible crystal shapes. Some crystals are too small to see. What are the 6 crystal forms of minerals? The six crystal families are triclinic, monoclinic, orthorhombic,
on March 29, 2022
What countries are in the Great Rift Valley?
Regional SpecificsIn Kenya, Uganda and the fringes of South Sudan, the Great Rift runs along two separate branches that are joined to each other only at their southern end, in Southern Tanzania along its border with Zambia. The two branches are called the Western Rift Valley and the Eastern Rift Valley. How many countries are in
on March 29, 2022
What is Richter scale in geography?
Regional SpecificsThe Richter scale measures the magnitude of an earthquake (how powerful it is). It is measured using a machine called a seismometer which produces a seismograph. A Richter scale is normally numbered 1-10, though there is no upper limit. What is the Richter scale simple definition? Richter scale (ML), quantitative measure of an earthquake’s magnitude